<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>Document</title>
</head>
<body>
	<form action="./add.php" method="post">
		<input type="text" name="username">
		<textarea name="content"  cols="30" rows="10"></textarea>
		<input type="submit" value="提交">
	</form>

	<?php $data = include 'db.php'; 

	var_dump($data);
	?>
</body>
</html>